ch10 Flashcards
(124 cards)
The Internet is one large network.
F. Network of network
The Internet is flat in structure
F. It consists of multiple interconnected networks, forming a complex web of infrastructure.)
What entities make up the internet’s network infrastructure?
A) National and state government agencies
B) Nonprofit organizations
C) For-profit companies
D) All of the above
E) None of the above
D
How do networks on the internet exchange data with each other?
A) By physical mail
B) By using Internet protocols and exchanging data packets
C) By sending carrier pigeons
D) By telepathy
E) By Morse code
B
How do users typically connect to the internet?
A) Through satellite dishes
B) Through Internet cafes
C) Through an Internet service provider (ISP)
D) By using carrier pigeons
E) By smoke signals
C
What happens when a user accesses content outside their ISP’s network?
A) Data flows only within the ISP’s network
B) Data is transmitted via telepathy
C) Data flows through multiple networks linking ISPs
D) The user’s device receives the content directly
E) The user’s device becomes the ISP’s network
C
How do networks on the internet handle traffic from other networks?
A) They block all incoming traffic
B) They charge a fee for incoming traffic
C) They offer free access to all incoming traffic
D) They redirect incoming traffic to a different network
E) They send carrier pigeons to deliver incoming data packets
C
What aspect of networking is tightly regulated within this “rigidly controlled club”?
A) Application protocols
B) Physical layer standards
C) Transport layer protocols
D) Data encryption methods
E) Network security measures
C
What aspect of networking is tightly regulated within this “rigidly controlled club”?
A) Application protocols
B) Physical layer standards
C) Transport layer protocols
D) Data encryption methods
E) Network security measures
C
Which layers of the OSI model require adherence to strict standards for data exchange?
A) Presentation layer
B) Transport layer
C) Data link layer
D) Physical layer
E) Application layer
D
What flexibility does this “rigidly controlled club” allow for in terms of protocol development?
A) None; all protocols must adhere strictly to existing standards
B) Limited flexibility for minor adjustments
C) Freedom to develop new content and application protocols
D) Only allows modifications to existing protocols
E) Allowing changes only at the physical layer
C
\Which type of ISPs connect directly with tier 1 ISPs?
A) Tier 1 ISPs
B) Tier 2 ISPs
C) Tier 3 ISPs
D) Local ISPs
E) National ISPs
B
What is the primary function of Tier 2 ISPs?
A) Selling access to individuals
B) Connecting with Tier 1 ISPs
C) Selling access to local ISPs
D) Providing services to their customers
E) Exchanging data at Internet exchange point
C
Which ISPs are directly connected to individuals?
A) Tier 1 ISPs
B) Tier 2 ISPs
C) Tier 3 ISPs
D) Regional ISPs
E) National ISPs
C
Tier 1 service providers connect together and exchange data at IXPs.
T
At the top of the Internet structure are tier 1 ___________, such as AT&T and Sprint.
a. Network Access Points
b. Internet service providers
c. bridges
d. LATAs
e. digital subscriber lines
B
Tier 1 ISPs connect together and exchange data at ___________.
a. IXPs
b. cable modem termination system endpoints
c. distribution hubs
d. the Internet engineering task force headquarters
e. the Internet Society network center
A
Who primarily operates most Internet Exchange Points (IXPs) and Internet Service Providers (ISPs) in contemporary times?
A) Government agencies
B) Nonprofit organizations
C) Commercial firms
D) Educational institutions
E) Volunteer groups
C
What is a common strategy employed by regional and local ISPs to enhance the reliability of their network connections?
A) Limiting connections to a single higher-level ISP
B) Establishing multiple connections with other ISPs
C) Relying solely on Tier 1 ISPs
D) Avoiding redundancy in network connections
E) Restricting access to Internet Exchange Points
B
Why do regional and local ISPs establish multiple connections with other ISPs?
A) To increase dependency on a single higher-level ISP
B) To increase redundancy in network connections
C) To decrease the reliability of their network connections
D) To rely solely on Tier 1 ISPs
E) To restrict access to Internet Exchange Points
B
IXPs were originally designed to connect only tier 3 ISPs.
F
What is the primary function of Internet Exchange Points (IXPs)?
A) Providing internet access to individuals
B) Connecting regional ISPs to tier 1 ISPs
C) Linking networks of tier 2 and tier 3 ISPs
D) Connecting tier 1 ISPs together
E) Regulating internet traffic flow
D
In addition to tier 1 ISPs, what other types of ISPs may directly connect to IXPs?
A) Only tier 2 ISPs
B) Only tier 3 ISPs
C) Only regional ISPs
D) Large tier 2 and tier 3 ISPs
E) National ISPs
D
What is the role of smaller IXPs in major cities?
A) They provide internet access to individuals
B) They link networks of regional ISPs
C) They connect tier 1 ISPs together
D) They regulate internet traffic flow
E) They only serve nonprofit organizations
B